radial velocity with a period of 673 days, but at that time an explanation to the radial velocity variations (such as a planet) wasn't presented. In 2014, Lee et al. found further evidence for the planet's existence, finding a different period of 605.2 days. After ruling out alternative explanations for the radial velocity variations, such as stellar variability, its existence could be confirmed.

Beta Cancri b was discovered with doppler spectroscopy,